[Tarantool-patches] [PATCH luajit 02/36] test: enable <alias_alloc.lua> LuaJIT test

[Sergey Kaplun]

This patch moves the <alias_alloc.lua> test from the <misc> to the
created <opt/mem> directory, includes it in <index>, and names subtests.

Testing optimizations in <lj_opt_mem.c> requires CSE, DCE, FOLD, and FWD
optimizations enabled. Hence, the corresponding flags are used for the
<mem> directory in <index>.

Part of tarantool/tarantool#9398
---
 test/LuaJIT-tests/opt/index                   |  1 +
 .../{misc => opt/mem}/alias_alloc.lua         | 30 +++++++++----------
 test/LuaJIT-tests/opt/mem/index               |  1 +
 3 files changed, 16 insertions(+), 16 deletions(-)
 rename test/LuaJIT-tests/{misc => opt/mem}/alias_alloc.lua (53%)
 create mode 100644 test/LuaJIT-tests/opt/mem/index

diff --git a/test/LuaJIT-tests/opt/index b/test/LuaJIT-tests/opt/index
index 94d50aec..8c43b56e 100644
--- a/test/LuaJIT-tests/opt/index
+++ b/test/LuaJIT-tests/opt/index
@@ -3,4 +3,5 @@ fold +fold
 fwd +fwd
 fuse.lua +fuse
 loop +loop
+mem +cse +dse +fold +fwd
 sink +sink
diff --git a/test/LuaJIT-tests/misc/alias_alloc.lua b/test/LuaJIT-tests/opt/mem/alias_alloc.lua
similarity index 53%
rename from test/LuaJIT-tests/misc/alias_alloc.lua
rename to test/LuaJIT-tests/opt/mem/alias_alloc.lua
index 02fe618d..a9627b55 100644
--- a/test/LuaJIT-tests/misc/alias_alloc.lua
+++ b/test/LuaJIT-tests/opt/mem/alias_alloc.lua
@@ -1,8 +1,7 @@
-
-do
+do --- ALOAD forwarding, same table.
   local t = {1}
   local x
-  for i=1,100 do
+  for i = 1, 100 do
     local v = {i}
     t[1] = v[1]
     x = v[1]
@@ -10,45 +9,44 @@ do
   assert(x == 100 and t[1] == 100)
 end
 
-do
+do --- ALOAD forwarding, different tables.
   local t = {1}
   local x,y
-  for i=1,100 do
+  for i = 1, 100 do
     local v = {i}
-    local w = {i+1}
+    local w = {i + 1}
     x = v[1]
     y = w[1]
   end
   assert(x == 100 and y == 101)
 end
 
-do
+do --- FLOAD forwarding.
   local mt = {}
   local t = setmetatable({}, mt)
   local x
-  for i=1,100 do
+  for _ = 1, 100 do
     local v = {}
     setmetatable(v, getmetatable(t))
     assert(getmetatable(v) == mt)
   end
 end
 
--- See also sink_alloc.lua
-do
-  local x,k={1,2},{3,4}
-  for i=1,100 do x = {x[1]+k[1], x[2]+k[2]} end
+-- See also <opt/sink/alloc.lua>.
+do --- Forwarding the constant-on-trace table in the complex add.
+  local x, k = {1, 2}, {3, 4}
+  for _ = 1, 100 do x = {x[1] + k[1], x[2] + k[2]} end
   assert(x[1] == 301)
   assert(x[2] == 402)
 end
 
--- FLOAD for tab.asize/tab.array crossing NEWREF.
-do
+
+do --- FLOAD forwarding for tab.asize/tab.array crossing NEWREF.
   local t = {1}
-  for i=1,100 do
+  for _ = 1, 100 do
     local v = {}
     local w = {}
     v[1] = t[1]
     w[1] = t[1]
   end
 end
-
diff --git a/test/LuaJIT-tests/opt/mem/index b/test/LuaJIT-tests/opt/mem/index
new file mode 100644
index 00000000..0b1856ed
--- /dev/null
+++ b/test/LuaJIT-tests/opt/mem/index
@@ -0,0 +1 @@
+alias_alloc.lua
-- 
2.45.2